Optimization: Switched to 1D array in WindowAnimator.
Optimization: Eliminated use of CollisionBehavior in acquiring altitude
map in TerrainLocked and CollidesWithTerrain. Also reduced
CollidesWithTerrain testing rate by 50%.
Optimization: Smarter removal of objects from SpacePartitioningGrid.
Bugfix: Unchecked zero norm vector prior to normalization.
Optimization: Vertices no longer animated unless a WorldObject is using
the animated model in question. Limit to Animation update rate using
System.currentTimeMillis(). Separated collision and visibility lists.
Optimization: Removed legacy delegate methods for setting coords in
TriangleVertexWindow.